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Known as dwarf citrus trees, miniature lemon (Citrus limon) and lime (Citrus aurantifolia) trees make ideal additions to most any patio, balcony or yard. The trees are often planted in containers and do not take up a lot of space. The trees, which are best grown in U.S. Department of Agriculture hardiness zones 8 through 11, will produce ample fruit if properly fed or fertilized.

Commercial Fertilizers

Like most fruit trees, miniature lemon and lime trees require large amounts of nitrogen to properly grown and yield fruit. When purchasing a commercial plant food or fertilizer, use one that has a higher concentration of nitrogen than it does potassium or phosphorus. Dwarf citrus tree grower Four Winds Growers recommends a 2-1-1 ratio of nitrogen, potassium and phosphorous, respectively. Any brand of commercial plant food that is tailored to the needs of either citrus or avocado plants can also be used if available. To determine the amount to use and frequency of application, consult the product's packaging, as each product has its own specific instructions.

Potted Trees

In addition to proper fertilizer, trace minerals such as zinc, manganese and iron are especially important for potted miniature lemon and lime trees since the minerals in the potting soil deplete quickly. Check the label of your fertilizer choice to assure that these minerals are present in the composition of the plant food and use according to the package's directions.

Delivery Method

The type of plant food used to fertilize miniature lime or lemon trees is just as important as the brand. Use a slow-release, granular fertilizer that is gently mixed into the soil instead of fertilizer stakes. While fertilizer stakes are convenient, they can burn the roots of small trees and even kill them.

Considerations

In addition to fertilizer and plant food, miniature lemon and lime trees require no fewer than eight hours of direct sunlight per day. If direct sunlight is not available in such quantity, provide a source of artificial sunlight in addition to natural light to reach eight hours cumulatively. Yellowing leaves on miniature lemon and lime trees is a sign of either improper fertilizing or soil that is too wet. A deep green leaf signifies a healthy plant, so use the appearance of the plant's leaves to guide you.

About the Author

Leeann Teagno has been writing professionally since 2006. An English major, she continues to study information systems management at American Public University. Teagno is an organic gardener, cook and technology buff with past employment in mobile communications. She also volunteers at an animal shelter and operates a home bakery.